Car-door-operating mechanism.



UNITED STATES PATENT osmosi. f.

JULIUS c. HERRMANNOF Sr. LOUIS, MISSOURI, ASSIGNOR 'ro AMERICAN f GAR 'a l FOUNDRYCOMPAN if. QF fer-"LOUIS, MISSOURI; A'- coRPoRAr-IQNjj Netze-e612.

To (1J/Z when/:fit may confiera."

Beit known'that LJUILIUs (1 HERRilAiIN,`

a citizen 'ofthe' United States, residing at St.

- Louis, Missouri,` 'have invented a certain neW and useful Improvement in; Car-DoorfOper-"- lating Mechanism, of Which the following-is a full,`clear, and exact description',such as Will enableaothers skilled in the art to which it ap#` pertains to make and usethe same, reference being, had -to the accom'ipanying drawings,

forming part of this speci cation, i'n Which- Figure l is a plan view of a portion of'a car,

showing my Improved' door-operating mech- This inventicn relates to 'a new: and useful improvementm mechanism for operating the 2o doors of cars` i The objects otthis invention are to sim- .phy the" constluction' of door operating mechanism andat -the'sametime provide a hand-Wheel.`

isi?

pointedoutin theclaims.4

AIn the drawmgs, I indicatsthesideiwalls of `a c ar, 2 is the yfloor thereof, and-Sfrepresents the center sills. Suitable brackets veirtend from the side Walls andpro'vide bearings; of a 'shaft4,1 at one end of Which is arranged a hand-Wheel 5. The shaft 4 insteadof being which ratchet-Wheel' y 4s provided with a. handfwhe'elll mayv have af squaredhend portion to permit the use cfa Wrench, wherebyv power may be imparted to the shaft 4.

6 indicates a ratchet-Wheel on shaft 4,with co erates a paWl 7. Sprockets 8- are arrange on the opposite ends of the shaft 4, over which pass chains ory (bles 9, said -chains or cables alsol passing over idle 'sprockets 10, mounted in bearings f 11.5 .v In'the length 'of 'chainsQ isa link ,9511 bearings for a -transversely--'arA ranged shai:` 13, which shaft'is rovided With- 12, depend-v' ing from the side Walls andcenter sill of the constituting rollers 1.4, operating upon trac I s pecicatihnof Letters Pate i1t.f y i Application mai .Im-'sry 2:1906. saiaiNo.v294;2`39.

Fig. 2Vv is a verticaljsectional view through the car, showing the door-operating mechanism iii-position thereon; and-Fig. 3 is a side elevational View of said mechanism.

1 l car.- f 1K3 also 'carries rollers 15, which vrollers cooperate With'iiangedf'plates 16,"de-V ypending from the doors- 17'. The `lower flanges of 'plates'` vv'116 vconstitute bearing-Surby reference-to Fig. 3 it Will be' observedthat lWhen the door isclosedthe rollers 15 lie un# which flat portions lie in as to coperate With the rollers l5 When the ro'llers'lfi4 aremoved `along the tracks to'pe'r-v inFig.3.

raise the paWl and operate'the handvvheel so vvhen the Weight ofthe door Will causeY the d oor Ato drop to the position shown inv dotted lines, in Which position` the rollers-14 will be` rollers '15` Willfr'ideflunder rthey inclined, s urthe final movementcausing"fthe rollers 1 5 to Abe located well under. thehorizontal portions of said bearing-slirfaces,infwhich position'the 'rollers 14 are at theeXtre'mitv of the hori`zontothe fact-that in operat'in thefrollers l4land 15 rotate in oppositeidir'ections one or both sets should be' sprockets 8 should be `filjredlto the ends ofthe ar'allelism` in the shaft (1, sofas to." insure movement ot shaf t 1 Whilehreshown plied to two doors,'";it isobviousthat a-greater carWas-proVided-With ourjd'oorsthe powershaft could beg located between 'two transversely-arrangedpairs of -rdoor's. l

am aware that minorfchanges in the constructim,. arrarigementg'` and combination of the" several part-soi mydevice can be made and substituted fcrthose herein shown and faces forcoperating With' the rollers 15,: and- `der the Hat yportions of the bearing-surfaces,

planes substantially parallel to the' door. f The bearing-surfaces' recede toward the hinged edge of the door'sc mit thedoorto open, as shown in dotted lines ing the rollers 1fite-movam anoppositedirectionon' theirgtra'cks", jin, which event the faces of platesldiintil, tliedo'ors are closed,

Patented ..Iuiief 1 9,` 1906...

To open the :doors,it is only-necessary to '7 as'to causethe-rollersl totravel -fromthe position shoWn-iniull lines in Fig. 3 to the position shown in 'dotted lines 'in said figure, f

at theirextremelimito'mvement with respectto the horizontal pertion of the track.

"To closev the doors, thedirection oftlemovef ment of 'the hand-Wheelff 5 is reversed, cans-- tal portion of their supporting-tracks. Due f oosepn the'shaftfl-AS'...-f The e mechanism as :ip-

number of doors could'be operatedl from the. f

wsv

lstantially as described.

2. In a car-door-operatin mechanism, the combination With a hinged dor having inclined bearing-surfaces on its under side, a reciprocating shaft having a plurality of rollers oosely mounted thereon for cooperating with said bearingsurfaces, tracks upon Which said shaft is mounted, parallel chains carrying bearings in which the ends of said shaft are mounted, and meansfor imparting uniform motion to said chains; substantially as described.

3. In a car-door-operatin mechanism, the combination with al pair of hinged doors, each of said doors having bearin -surfaces, a rcciprocatin shaft carrying rol ers cooperating With the earingsurfaces on said doors, tracks for guiding the movement of said shaft, chains mounted at each side of the car, said chains carrying links in which the ends of said shaft are mounted, connected sprockets over Which said-chains pass7 a ratchet- Wheel operating in connection with said sprockets, and a paWl cooperating with said ratchet-Wheel; substantially as described.

In testimony whereof I hereunto aflix my signature, in the presence of two Witnesses, this 29th day of December, 1905.

JULIUS C. HERRMANN, 

